What does the Spanish phrase mano a mean?

The Spanish phrase "mano a" doesn't have a meaning on its own. It's actually part of a common expression: "mano a mano".

"Mano a mano" translates to "hand to hand" in English. It's used to describe:

* A close fight or competition: "They had a mano a mano battle for the championship."

* A close relationship or collaboration: "We worked mano a mano on the project."

* A direct confrontation: "The two leaders faced each other mano a mano."

So, you won't find the phrase "mano a" used independently. It's always part of the expression "mano a mano".